1. Of or pertaining to Mt. Atlas in Libya, and hence applied to the ocean which lies between Europe
and Africa on the east and America on the west; as, the Atlantic Ocean (called also the Atlantic); the
Atlantic basin; the Atlantic telegraph.
2. Of or pertaining to the isle of Atlantis.
3. Descended from Atlas.
The seven Atlantic sisters.
(||At*lan"ti*des) n. pl. [L. See Atlantes.] The Pleiades or seven stars, fabled to have been
the daughters of Atlas.
(At"las) n.; pl. Atlases [L. Atlas, -antis, Gr. one of the older family of gods, who bears up the
pillars of heaven; also Mt. Atlas, in W. Africa, regarded as the pillar of heaven. It is from the root of to
bear. See Tolerate.]
1. One who sustains a great burden.
2. (Anat.) The first vertebra of the neck, articulating immediately with the skull, thus sustaining the
globe of the head, whence the name.
3. A collection of maps in a volume; supposed to be so called from a picture of Atlas supporting the
world, prefixed to some collections. This name is said to have been first used by Mercator, the celebrated
geographer, in the 16th century.
4. A volume of plates illustrating any subject.
5. A work in which subjects are exhibited in a tabular from or arrangement; as, an historical atlas.
6. A large, square folio, resembling a volume of maps; called also atlas folio.
7. A drawing paper of large size. See under Paper, n.
Atlas powder, a nitroglycerin blasting compound of pasty consistency and great explosive power.
(At"las), n. [Ar., smooth.] A rich kind of satin manufactured in India. Brande & C.
(At`mi*dom"e*ter) n. [Gr. smoke, vapor + -meter; cf. F. atmidomètre.] An instrument for
measuring the evaporation from water, ice, or snow. Brande & C.
(At"mo) n. [Contr. fr. atmosphere.] (Physics) The standard atmospheric pressure used in certain
physical measurements calculations; conventionally, that pressure under which the barometer stands at
760 millimeters, at a temperature of 0° Centigrade, at the level of the sea, and in the latitude of Paris.
Sir W. Thomson.
(At`mo*log"ic At`mo*log"ic*al) a. Of or pertaining to atmology. "Atmological laws of heat."
(At*mol"o*gist) n. One who is versed in atmology.
(At*mol"o*gy) n. [Gr. vapor + - logy.] (Physics) That branch of science which treats of the
laws and phenomena of aqueous vapor. Whewell.
(At*mol"y*sis) n. [Gr. vapor + a loosing, to loose.] (Chem.) The act or process of separating
mingled gases of unequal diffusibility by transmission through porous substances.